Difference between rear brakes/trailing arms?

[gokaht]

Trying to install rear brake calipers on a 90 325i - trailing arms are off an 86-87 325es. Caliper carriers don't seem to line up - are the trailing arm caliper mount ears different between years or are the carriers different?

Thanks!

[xLibelle]

The carriers are different. Earlier are ATE and the later are normally Girling. Use those as key words (in a forum search) for some answers as to the differences and if one is possibly better than another.
But no, the brake components arent interchangable. And all non m10 e30's semi-trailing arms are the same.